X-Git-Url: https://review.openocd.org/gitweb?p=openocd.git;a=blobdiff_plain;f=src%2Fjtag%2Fjtag.c;h=c73e0c9aa879663b1056e796215d2b2591c44a78;hp=259a327dd87eb71424c9706ca3218aef95707523;hb=eabb49b570290f2bcda80a0c591431b7ef240d43;hpb=e9297b40b994f071474210e7d9e224d50e25fcaf;ds=sidebyside diff --git a/src/jtag/jtag.c b/src/jtag/jtag.c index 259a327dd8..c73e0c9aa8 100644 --- a/src/jtag/jtag.c +++ b/src/jtag/jtag.c @@ -33,6 +33,13 @@ #include "string.h" #include + +/* note that this is not marked as static as it must be available from outside jtag.c for those + that implement the jtag_xxx() minidriver layer +*/ +int jtag_error=ERROR_OK; + + char* tap_state_strings[16] = { "tlr", @@ -58,6 +65,8 @@ static cmd_queue_page_t *cmd_queue_pages = NULL; * 3: Pause-DR * 4: Shift-IR * 5: Pause-IR + * + * SD->SD and SI->SI have to be caught in interface specific code */ u8 tap_move[6][6] = { @@ -95,6 +104,16 @@ tap_transition_t tap_transitions[16] = {TAP_SDS, TAP_RTI} /* UI */ }; +char* jtag_event_strings[] = +{ + "JTAG controller reset(tms or TRST)" +}; + +/* kludge!!!! these are just global variables that the + * interface use internally. They really belong + * inside the drivers, but we don't want to break + * linking the drivers!!!! + */ enum tap_state end_state = TAP_TLR; enum tap_state cur_state = TAP_TLR; int jtag_trst = 0; @@ -115,11 +134,25 @@ int jtag_verify_capture_ir = 1; int jtag_nsrst_delay = 0; /* default to no nSRST delay */ int jtag_ntrst_delay = 0; /* default to no nTRST delay */ +/* maximum number of JTAG devices expected in the chain + */ +#define JTAG_MAX_CHAIN_SIZE 20 + /* callbacks to inform high-level handlers about JTAG state changes */ jtag_event_callback_t *jtag_event_callbacks; +/* speed in kHz*/ +static int speed1 = 0, speed2 = 0; +/* flag if the kHz speed was defined */ +static int hasKHz = 0; + /* jtag interfaces (parport, FTDI-USB, TI-USB, ...) */ + +#if BUILD_ECOSBOARD == 1 + extern jtag_interface_t eCosBoard_interface; +#endif + #if BUILD_PARPORT == 1 extern jtag_interface_t parport_interface; #endif @@ -148,7 +181,18 @@ jtag_event_callback_t *jtag_event_callbacks; extern jtag_interface_t gw16012_interface; #endif +#if BUILD_PRESTO_LIBFTDI == 1 || BUILD_PRESTO_FTD2XX == 1 + extern jtag_interface_t presto_interface; +#endif + +#if BUILD_USBPROG == 1 + extern jtag_interface_t usbprog_interface; +#endif + jtag_interface_t *jtag_interfaces[] = { +#if BUILD_ECOSBOARD == 1 + &eCosBoard_interface, +#endif #if BUILD_PARPORT == 1 &parport_interface, #endif @@ -169,6 +213,12 @@ jtag_interface_t *jtag_interfaces[] = { #endif #if BUILD_GW16012 == 1 &gw16012_interface, +#endif +#if BUILD_PRESTO_LIBFTDI == 1 || BUILD_PRESTO_FTD2XX == 1 + &presto_interface, +#endif +#if BUILD_USBPROG == 1 + &usbprog_interface, #endif NULL, }; @@ -176,14 +226,23 @@ jtag_interface_t *jtag_interfaces[] = { jtag_interface_t *jtag = NULL; /* configuration */ -char* jtag_interface = NULL; -int jtag_speed = -1; +jtag_interface_t *jtag_interface = NULL; +int jtag_speed = 0; +int jtag_speed_post_reset = 0; + /* forward declarations */ +void jtag_add_pathmove(int num_states, enum tap_state *path); +void jtag_add_runtest(int num_cycles, enum tap_state endstate); +void jtag_add_end_state(enum tap_state endstate); +void jtag_add_sleep(u32 us); +int jtag_execute_queue(void); +int jtag_cancel_queue(void); /* jtag commands */ int handle_interface_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc); int handle_jtag_speed_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc); +int handle_jtag_khz_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc); int handle_jtag_device_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc); int handle_reset_config_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc); int handle_jtag_nsrst_delay_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc); @@ -194,7 +253,6 @@ int handle_scan_chain_command(struct command_context_s *cmd_ctx, char *cmd, char int handle_endstate_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc); int handle_jtag_reset_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc); int handle_runtest_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc); -int handle_statemove_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc); int handle_irscan_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc); int handle_drscan_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc); @@ -251,7 +309,7 @@ int jtag_call_event_callbacks(enum jtag_event event) { jtag_event_callback_t *callback = jtag_event_callbacks; - DEBUG("jtag event: %i", event); + LOG_DEBUG("jtag event: %s", jtag_event_strings[event]); while (callback) { @@ -294,8 +352,9 @@ jtag_device_t* jtag_get_device(int num) device = device->next; i++; } - - return NULL; + + LOG_ERROR("jtag device number %d not defined", num); + exit(-1); } void* cmd_queue_alloc(size_t size) @@ -322,7 +381,8 @@ void* cmd_queue_alloc(size_t size) offset = (*p_page)->used; (*p_page)->used += size; - return ((*p_page)->address) + offset; + u8 *t=(u8 *)((*p_page)->address); + return t + offset; } void cmd_queue_free() @@ -340,40 +400,46 @@ void cmd_queue_free() cmd_queue_pages = NULL; } -int jtag_add_ir_scan(int num_fields, scan_field_t *fields, enum tap_state state) +static void jtag_prelude1() { - jtag_command_t **last_cmd; - jtag_device_t *device; - int i, j; - int scan_size = 0; - /* int changed = 0; */ - if (jtag_trst == 1) { - WARNING("JTAG command queued, while TRST is low (TAP in reset)"); - return ERROR_JTAG_TRST_ASSERTED; + LOG_WARNING("JTAG command queued, while TRST is low (TAP in reset)"); + jtag_error=ERROR_JTAG_TRST_ASSERTED; + return; } - /* - for (i=0; icur_instr, fields[i].out_value, device->ir_length)) - changed = 1; - } - else - { - ERROR("inexistant device specified for ir scan"); - return ERROR_INVALID_ARGUMENTS; - } - } + if (cmd_queue_end_state == TAP_TLR) + jtag_call_event_callbacks(JTAG_TRST_ASSERTED); +} - if (!changed) - return ERROR_OK; - */ +static void jtag_prelude(enum tap_state state) +{ + jtag_prelude1(); + + if (state != -1) + jtag_add_end_state(state); + + cmd_queue_cur_state = cmd_queue_end_state; +} + +void jtag_add_ir_scan(int num_fields, scan_field_t *fields, enum tap_state state) +{ + jtag_prelude(state); + int retval=interface_jtag_add_ir_scan(num_fields, fields, cmd_queue_end_state); + if (retval!=ERROR_OK) + jtag_error=retval; +} + +int MINIDRIVER(interface_jtag_add_ir_scan)(int num_fields, scan_field_t *fields, enum tap_state state) +{ + jtag_command_t **last_cmd; + jtag_device_t *device; + int i, j; + int scan_size = 0; + + last_cmd = jtag_get_last_command_p(); /* allocate memory for a new list member */ @@ -388,19 +454,8 @@ int jtag_add_ir_scan(int num_fields, scan_field_t *fields, enum tap_state state) (*last_cmd)->cmd.scan->num_fields = jtag_num_devices; /* one field per device */ (*last_cmd)->cmd.scan->fields = cmd_queue_alloc(jtag_num_devices * sizeof(scan_field_t)); (*last_cmd)->cmd.scan->end_state = state; - - if (state != -1) - cmd_queue_end_state = state; - if (cmd_queue_cur_state == TAP_TLR && cmd_queue_end_state != TAP_TLR) - jtag_call_event_callbacks(JTAG_TRST_RELEASED); - - if (cmd_queue_end_state == TAP_TLR) - jtag_call_event_callbacks(JTAG_TRST_ASSERTED); - - cmd_queue_cur_state = cmd_queue_end_state; - - for (i=0; i < jtag_num_devices; i++) + for (i = 0; i < jtag_num_devices; i++) { int found = 0; device = jtag_get_device(i); @@ -408,27 +463,30 @@ int jtag_add_ir_scan(int num_fields, scan_field_t *fields, enum tap_state state) (*last_cmd)->cmd.scan->fields[i].device = i; (*last_cmd)->cmd.scan->fields[i].num_bits = scan_size; (*last_cmd)->cmd.scan->fields[i].in_value = NULL; - if (jtag_verify_capture_ir) - { - (*last_cmd)->cmd.scan->fields[i].in_check_value = buf_cpy(device->expected, cmd_queue_alloc(CEIL(scan_size, 8)), scan_size); - (*last_cmd)->cmd.scan->fields[i].in_check_mask = buf_cpy(device->expected_mask, cmd_queue_alloc(CEIL(scan_size, 8)), scan_size); - } - else - { - (*last_cmd)->cmd.scan->fields[i].in_check_value = NULL; - (*last_cmd)->cmd.scan->fields[i].in_check_mask = NULL; - } - (*last_cmd)->cmd.scan->fields[i].in_handler = NULL; - (*last_cmd)->cmd.scan->fields[i].in_handler_priv = NULL; + (*last_cmd)->cmd.scan->fields[i].in_handler = NULL; /* disable verification by default */ /* search the list */ - for (j=0; j < num_fields; j++) + for (j = 0; j < num_fields; j++) { if (i == fields[j].device) { found = 1; (*last_cmd)->cmd.scan->fields[i].out_value = buf_cpy(fields[j].out_value, cmd_queue_alloc(CEIL(scan_size, 8)), scan_size); (*last_cmd)->cmd.scan->fields[i].out_mask = buf_cpy(fields[j].out_mask, cmd_queue_alloc(CEIL(scan_size, 8)), scan_size); + + if (jtag_verify_capture_ir) + { + if (fields[j].in_handler==NULL) + { + jtag_set_check_value((*last_cmd)->cmd.scan->fields+i, device->expected, device->expected_mask, NULL); + } else + { + (*last_cmd)->cmd.scan->fields[i].in_handler = fields[j].in_handler; + (*last_cmd)->cmd.scan->fields[i].in_handler_priv = fields[j].in_handler_priv; + (*last_cmd)->cmd.scan->fields[i].in_check_value = device->expected; + (*last_cmd)->cmd.scan->fields[i].in_check_mask = device->expected_mask; + } + } device->bypass = 0; break; @@ -441,7 +499,7 @@ int jtag_add_ir_scan(int num_fields, scan_field_t *fields, enum tap_state state) (*last_cmd)->cmd.scan->fields[i].out_value = buf_set_ones(cmd_queue_alloc(CEIL(scan_size, 8)), scan_size); (*last_cmd)->cmd.scan->fields[i].out_mask = NULL; device->bypass = 1; - + } /* update device information */ @@ -451,17 +509,20 @@ int jtag_add_ir_scan(int num_fields, scan_field_t *fields, enum tap_state state) return ERROR_OK; } -int jtag_add_plain_ir_scan(int num_fields, scan_field_t *fields, enum tap_state state) +void jtag_add_plain_ir_scan(int num_fields, scan_field_t *fields, enum tap_state state) { - jtag_command_t **last_cmd; - int i; - - if (jtag_trst == 1) - { - WARNING("JTAG command queued, while TRST is low (TAP in reset)"); - return ERROR_JTAG_TRST_ASSERTED; - } + jtag_prelude(state); + + int retval=interface_jtag_add_plain_ir_scan(num_fields, fields, cmd_queue_end_state); + if (retval!=ERROR_OK) + jtag_error=retval; +} +int MINIDRIVER(interface_jtag_add_plain_ir_scan)(int num_fields, scan_field_t *fields, enum tap_state state) +{ + int i; + jtag_command_t **last_cmd; + last_cmd = jtag_get_last_command_p(); /* allocate memory for a new list member */ @@ -477,17 +538,6 @@ int jtag_add_plain_ir_scan(int num_fields, scan_field_t *fields, enum tap_state (*last_cmd)->cmd.scan->fields = cmd_queue_alloc(num_fields * sizeof(scan_field_t)); (*last_cmd)->cmd.scan->end_state = state; - if (state != -1) - cmd_queue_end_state = state; - - if (cmd_queue_cur_state == TAP_TLR && cmd_queue_end_state != TAP_TLR) - jtag_call_event_callbacks(JTAG_TRST_RELEASED); - - if (cmd_queue_end_state == TAP_TLR) - jtag_call_event_callbacks(JTAG_TRST_ASSERTED); - - cmd_queue_cur_state = cmd_queue_end_state; - for (i = 0; i < num_fields; i++) { int num_bits = fields[i].num_bits; @@ -497,28 +547,32 @@ int jtag_add_plain_ir_scan(int num_fields, scan_field_t *fields, enum tap_state (*last_cmd)->cmd.scan->fields[i].out_value = buf_cpy(fields[i].out_value, cmd_queue_alloc(num_bytes), num_bits); (*last_cmd)->cmd.scan->fields[i].out_mask = buf_cpy(fields[i].out_mask, cmd_queue_alloc(num_bytes), num_bits); (*last_cmd)->cmd.scan->fields[i].in_value = fields[i].in_value; - (*last_cmd)->cmd.scan->fields[i].in_check_value = buf_cpy(fields[i].in_check_value, cmd_queue_alloc(num_bytes), num_bits); - (*last_cmd)->cmd.scan->fields[i].in_check_mask = buf_cpy(fields[i].in_check_mask, cmd_queue_alloc(num_bytes), num_bits); + (*last_cmd)->cmd.scan->fields[i].in_check_value = fields[i].in_check_value; + (*last_cmd)->cmd.scan->fields[i].in_check_mask = fields[i].in_check_mask; (*last_cmd)->cmd.scan->fields[i].in_handler = NULL; (*last_cmd)->cmd.scan->fields[i].in_handler_priv = NULL; } return ERROR_OK; } -int jtag_add_dr_scan(int num_fields, scan_field_t *fields, enum tap_state state) +void jtag_add_dr_scan(int num_fields, scan_field_t *fields, enum tap_state state) +{ + jtag_prelude(state); + + int retval=interface_jtag_add_dr_scan(num_fields, fields, cmd_queue_end_state); + if (retval!=ERROR_OK) + jtag_error=retval; +} + +int MINIDRIVER(interface_jtag_add_dr_scan)(int num_fields, scan_field_t *fields, enum tap_state state) { int i, j; int bypass_devices = 0; int field_count = 0; - jtag_command_t **last_cmd = jtag_get_last_command_p(); - jtag_device_t *device = jtag_devices; int scan_size; - if (jtag_trst == 1) - { - WARNING("JTAG command queued, while TRST is low (TAP in reset)"); - return ERROR_JTAG_TRST_ASSERTED; - } + jtag_command_t **last_cmd = jtag_get_last_command_p(); + jtag_device_t *device = jtag_devices; /* count devices in bypass */ while (device) @@ -540,24 +594,13 @@ int jtag_add_dr_scan(int num_fields, scan_field_t *fields, enum tap_state state) (*last_cmd)->cmd.scan->num_fields = num_fields + bypass_devices; (*last_cmd)->cmd.scan->fields = cmd_queue_alloc((num_fields + bypass_devices) * sizeof(scan_field_t)); (*last_cmd)->cmd.scan->end_state = state; - - if (state != -1) - cmd_queue_end_state = state; - - if (cmd_queue_cur_state == TAP_TLR && cmd_queue_end_state != TAP_TLR) - jtag_call_event_callbacks(JTAG_TRST_RELEASED); - - if (cmd_queue_end_state == TAP_TLR) - jtag_call_event_callbacks(JTAG_TRST_ASSERTED); - - cmd_queue_cur_state = cmd_queue_end_state; - for (i=0; i < jtag_num_devices; i++) + for (i = 0; i < jtag_num_devices; i++) { int found = 0; (*last_cmd)->cmd.scan->fields[field_count].device = i; - for (j=0; j < num_fields; j++) + for (j = 0; j < num_fields; j++) { if (i == fields[j].device) { @@ -567,21 +610,22 @@ int jtag_add_dr_scan(int num_fields, scan_field_t *fields, enum tap_state state) (*last_cmd)->cmd.scan->fields[field_count].out_value = buf_cpy(fields[j].out_value, cmd_queue_alloc(CEIL(scan_size, 8)), scan_size); (*last_cmd)->cmd.scan->fields[field_count].out_mask = buf_cpy(fields[j].out_mask, cmd_queue_alloc(CEIL(scan_size, 8)), scan_size); (*last_cmd)->cmd.scan->fields[field_count].in_value = fields[j].in_value; - (*last_cmd)->cmd.scan->fields[field_count].in_check_value = buf_cpy(fields[j].in_check_value, cmd_queue_alloc(CEIL(scan_size, 8)), scan_size); - (*last_cmd)->cmd.scan->fields[field_count].in_check_mask = buf_cpy(fields[j].in_check_mask, cmd_queue_alloc(CEIL(scan_size, 8)), scan_size); + (*last_cmd)->cmd.scan->fields[field_count].in_check_value = fields[j].in_check_value; + (*last_cmd)->cmd.scan->fields[field_count].in_check_mask = fields[j].in_check_mask; (*last_cmd)->cmd.scan->fields[field_count].in_handler = fields[j].in_handler; (*last_cmd)->cmd.scan->fields[field_count++].in_handler_priv = fields[j].in_handler_priv; } } if (!found) { +#ifdef _DEBUG_JTAG_IO_ /* if a device isn't listed, the BYPASS register should be selected */ if (!jtag_get_device(i)->bypass) { - ERROR("BUG: no scan data for a device not in BYPASS"); + LOG_ERROR("BUG: no scan data for a device not in BYPASS"); exit(-1); } - +#endif /* program the scan field to 1 bit length, and ignore it's value */ (*last_cmd)->cmd.scan->fields[field_count].num_bits = 1; (*last_cmd)->cmd.scan->fields[field_count].out_value = NULL; @@ -594,28 +638,122 @@ int jtag_add_dr_scan(int num_fields, scan_field_t *fields, enum tap_state state) } else { +#ifdef _DEBUG_JTAG_IO_ /* if a device is listed, the BYPASS register must not be selected */ if (jtag_get_device(i)->bypass) { - ERROR("BUG: scan data for a device in BYPASS"); + LOG_ERROR("BUG: scan data for a device in BYPASS"); exit(-1); } +#endif } } return ERROR_OK; } -int jtag_add_plain_dr_scan(int num_fields, scan_field_t *fields, enum tap_state state) +void MINIDRIVER(interface_jtag_add_dr_out)(int device_num, + int num_fields, + int *num_bits, + u32 *value, + enum tap_state end_state) { int i; + int field_count = 0; + int scan_size; + int bypass_devices = 0; + jtag_command_t **last_cmd = jtag_get_last_command_p(); + jtag_device_t *device = jtag_devices; + /* count devices in bypass */ + while (device) + { + if (device->bypass) + bypass_devices++; + device = device->next; + } - if (jtag_trst == 1) + /* allocate memory for a new list member */ + *last_cmd = cmd_queue_alloc(sizeof(jtag_command_t)); + last_comand_pointer = &((*last_cmd)->next); + (*last_cmd)->next = NULL; + (*last_cmd)->type = JTAG_SCAN; + + /* allocate memory for dr scan command */ + (*last_cmd)->cmd.scan = cmd_queue_alloc(sizeof(scan_command_t)); + (*last_cmd)->cmd.scan->ir_scan = 0; + (*last_cmd)->cmd.scan->num_fields = num_fields + bypass_devices; + (*last_cmd)->cmd.scan->fields = cmd_queue_alloc((num_fields + bypass_devices) * sizeof(scan_field_t)); + (*last_cmd)->cmd.scan->end_state = end_state; + + for (i = 0; i < jtag_num_devices; i++) { - WARNING("JTAG command queued, while TRST is low (TAP in reset)"); - return ERROR_JTAG_TRST_ASSERTED; + (*last_cmd)->cmd.scan->fields[field_count].device = i; + + if (i == device_num) + { + int j; +#ifdef _DEBUG_JTAG_IO_ + /* if a device is listed, the BYPASS register must not be selected */ + if (jtag_get_device(i)->bypass) + { + LOG_ERROR("BUG: scan data for a device in BYPASS"); + exit(-1); + } +#endif + for (j = 0; j < num_fields; j++) + { + u8 out_value[4]; + scan_size = num_bits[j]; + buf_set_u32(out_value, 0, scan_size, value[j]); + (*last_cmd)->cmd.scan->fields[field_count].num_bits = scan_size; + (*last_cmd)->cmd.scan->fields[field_count].out_value = buf_cpy(out_value, cmd_queue_alloc(CEIL(scan_size, 8)), scan_size); + (*last_cmd)->cmd.scan->fields[field_count].out_mask = NULL; + (*last_cmd)->cmd.scan->fields[field_count].in_value = NULL; + (*last_cmd)->cmd.scan->fields[field_count].in_check_value = NULL; + (*last_cmd)->cmd.scan->fields[field_count].in_check_mask = NULL; + (*last_cmd)->cmd.scan->fields[field_count].in_handler = NULL; + (*last_cmd)->cmd.scan->fields[field_count++].in_handler_priv = NULL; + } + } else + { +#ifdef _DEBUG_JTAG_IO_ + /* if a device isn't listed, the BYPASS register should be selected */ + if (!jtag_get_device(i)->bypass) + { + LOG_ERROR("BUG: no scan data for a device not in BYPASS"); + exit(-1); + } +#endif + /* program the scan field to 1 bit length, and ignore it's value */ + (*last_cmd)->cmd.scan->fields[field_count].num_bits = 1; + (*last_cmd)->cmd.scan->fields[field_count].out_value = NULL; + (*last_cmd)->cmd.scan->fields[field_count].out_mask = NULL; + (*last_cmd)->cmd.scan->fields[field_count].in_value = NULL; + (*last_cmd)->cmd.scan->fields[field_count].in_check_value = NULL; + (*last_cmd)->cmd.scan->fields[field_count].in_check_mask = NULL; + (*last_cmd)->cmd.scan->fields[field_count].in_handler = NULL; + (*last_cmd)->cmd.scan->fields[field_count++].in_handler_priv = NULL; + } } +} + + + +void jtag_add_plain_dr_scan(int num_fields, scan_field_t *fields, enum tap_state state) +{ + jtag_prelude(state); + + int retval=interface_jtag_add_plain_dr_scan(num_fields, fields, cmd_queue_end_state); + if (retval!=ERROR_OK) + jtag_error=retval; +} + +int MINIDRIVER(interface_jtag_add_plain_dr_scan)(int num_fields, scan_field_t *fields, enum tap_state state) +{ + int i; + jtag_command_t **last_cmd = jtag_get_last_command_p(); + /* allocate memory for a new list member */ *last_cmd = cmd_queue_alloc(sizeof(jtag_command_t)); last_comand_pointer = &((*last_cmd)->next); @@ -629,17 +767,6 @@ int jtag_add_plain_dr_scan(int num_fields, scan_field_t *fields, enum tap_state (*last_cmd)->cmd.scan->fields = cmd_queue_alloc(num_fields * sizeof(scan_field_t)); (*last_cmd)->cmd.scan->end_state = state; - if (state != -1) - cmd_queue_end_state = state; - - if (cmd_queue_cur_state == TAP_TLR && cmd_queue_end_state != TAP_TLR) - jtag_call_event_callbacks(JTAG_TRST_RELEASED); - - if (cmd_queue_end_state == TAP_TLR) - jtag_call_event_callbacks(JTAG_TRST_ASSERTED); - - cmd_queue_cur_state = cmd_queue_end_state; - for (i = 0; i < num_fields; i++) { int num_bits = fields[i].num_bits; @@ -649,24 +776,30 @@ int jtag_add_plain_dr_scan(int num_fields, scan_field_t *fields, enum tap_state (*last_cmd)->cmd.scan->fields[i].out_value = buf_cpy(fields[i].out_value, cmd_queue_alloc(num_bytes), num_bits); (*last_cmd)->cmd.scan->fields[i].out_mask = buf_cpy(fields[i].out_mask, cmd_queue_alloc(num_bytes), num_bits); (*last_cmd)->cmd.scan->fields[i].in_value = fields[i].in_value; - (*last_cmd)->cmd.scan->fields[i].in_check_value = buf_cpy(fields[i].in_check_value, cmd_queue_alloc(num_bytes), num_bits); - (*last_cmd)->cmd.scan->fields[i].in_check_mask = buf_cpy(fields[i].in_check_mask, cmd_queue_alloc(num_bytes), num_bits); + (*last_cmd)->cmd.scan->fields[i].in_check_value = fields[i].in_check_value; + (*last_cmd)->cmd.scan->fields[i].in_check_mask = fields[i].in_check_mask; (*last_cmd)->cmd.scan->fields[i].in_handler = fields[i].in_handler; (*last_cmd)->cmd.scan->fields[i].in_handler_priv = fields[i].in_handler_priv; } return ERROR_OK; } -int jtag_add_statemove(enum tap_state state) + +void jtag_add_tlr() { - jtag_command_t **last_cmd = jtag_get_last_command_p(); + jtag_prelude(TAP_TLR); - if (jtag_trst == 1) - { - WARNING("JTAG command queued, while TRST is low (TAP in reset)"); - return ERROR_JTAG_TRST_ASSERTED; - } + int retval; + retval=interface_jtag_add_tlr(); + if (retval!=ERROR_OK) + jtag_error=retval; +} +int MINIDRIVER(interface_jtag_add_tlr)() +{ + enum tap_state state = TAP_TLR; + jtag_command_t **last_cmd = jtag_get_last_command_p(); + /* allocate memory for a new list member */ *last_cmd = cmd_queue_alloc(sizeof(jtag_command_t)); last_comand_pointer = &((*last_cmd)->next); @@ -676,252 +809,204 @@ int jtag_add_statemove(enum tap_state state) (*last_cmd)->cmd.statemove = cmd_queue_alloc(sizeof(statemove_command_t)); (*last_cmd)->cmd.statemove->end_state = state; - if (state != -1) - cmd_queue_end_state = state; - - if (cmd_queue_cur_state == TAP_TLR && cmd_queue_end_state != TAP_TLR) - jtag_call_event_callbacks(JTAG_TRST_RELEASED); - - if (cmd_queue_end_state == TAP_TLR) - jtag_call_event_callbacks(JTAG_TRST_ASSERTED); - - cmd_queue_cur_state = cmd_queue_end_state; return ERROR_OK; } -int jtag_add_pathmove(int num_states, enum tap_state *path) +void jtag_add_pathmove(int num_states, enum tap_state *path) { - jtag_command_t **last_cmd = jtag_get_last_command_p(); - int i; - - if (jtag_trst == 1) - { - WARNING("JTAG command queued, while TRST is low (TAP in reset)"); - return ERROR_JTAG_TRST_ASSERTED; - } - /* the last state has to be a stable state */ if (tap_move_map[path[num_states - 1]] == -1) { - ERROR("TAP path doesn't finish in a stable state"); - return ERROR_JTAG_NOT_IMPLEMENTED; - } - - if (jtag->support_pathmove) - { - /* allocate memory for a new list member */ - *last_cmd = cmd_queue_alloc(sizeof(jtag_command_t)); - last_comand_pointer = &((*last_cmd)->next); - (*last_cmd)->next = NULL; - (*last_cmd)->type = JTAG_RUNTEST; - - (*last_cmd)->cmd.pathmove = cmd_queue_alloc(sizeof(pathmove_command_t)); - (*last_cmd)->cmd.pathmove->num_states = num_states; - (*last_cmd)->cmd.pathmove->path = cmd_queue_alloc(sizeof(enum tap_state) * num_states); - - for (i = 0; i < num_states; i++) - (*last_cmd)->cmd.pathmove->path[i] = path[i]; + LOG_ERROR("BUG: TAP path doesn't finish in a stable state"); + exit(-1); } - else + + enum tap_state cur_state=cmd_queue_cur_state; + int i; + for (i=0; i %s isn't a valid TAP transition", tap_state_strings[cur_state], tap_state_strings[path[i]]); + exit(-1); } + cur_state = path[i]; } - - if (cmd_queue_cur_state == TAP_TLR && cmd_queue_end_state != TAP_TLR) - jtag_call_event_callbacks(JTAG_TRST_RELEASED); - if (cmd_queue_end_state == TAP_TLR) - jtag_call_event_callbacks(JTAG_TRST_ASSERTED); + jtag_prelude1(); cmd_queue_cur_state = path[num_states - 1]; - - return ERROR_OK; + + int retval=interface_jtag_add_pathmove(num_states, path); + if (retval!=ERROR_OK) + jtag_error=retval; } -int jtag_add_runtest(int num_cycles, enum tap_state state) + +int MINIDRIVER(interface_jtag_add_pathmove)(int num_states, enum tap_state *path) { jtag_command_t **last_cmd = jtag_get_last_command_p(); + int i; - if (jtag_trst == 1) - { - WARNING("JTAG command queued, while TRST is low (TAP in reset)"); - return ERROR_JTAG_TRST_ASSERTED; - } - /* allocate memory for a new list member */ *last_cmd = cmd_queue_alloc(sizeof(jtag_command_t)); - (*last_cmd)->next = NULL; last_comand_pointer = &((*last_cmd)->next); - (*last_cmd)->type = JTAG_RUNTEST; + (*last_cmd)->next = NULL; + (*last_cmd)->type = JTAG_PATHMOVE; - (*last_cmd)->cmd.runtest = cmd_queue_alloc(sizeof(runtest_command_t)); - (*last_cmd)->cmd.runtest->num_cycles = num_cycles; - (*last_cmd)->cmd.runtest->end_state = state; - - if (state != -1) - cmd_queue_end_state = state; - - if (cmd_queue_cur_state == TAP_TLR && cmd_queue_end_state != TAP_TLR) - jtag_call_event_callbacks(JTAG_TRST_RELEASED); + (*last_cmd)->cmd.pathmove = cmd_queue_alloc(sizeof(pathmove_command_t)); + (*last_cmd)->cmd.pathmove->num_states = num_states; + (*last_cmd)->cmd.pathmove->path = cmd_queue_alloc(sizeof(enum tap_state) * num_states); - if (cmd_queue_end_state == TAP_TLR) - jtag_call_event_callbacks(JTAG_TRST_ASSERTED); - - cmd_queue_cur_state = cmd_queue_end_state; + for (i = 0; i < num_states; i++) + (*last_cmd)->cmd.pathmove->path[i] = path[i]; return ERROR_OK; } -int jtag_add_reset(int req_trst, int req_srst) +int MINIDRIVER(interface_jtag_add_runtest)(int num_cycles, enum tap_state state) { - int trst_with_tms = 0; - jtag_command_t **last_cmd = jtag_get_last_command_p(); - if (req_trst == -1) - req_trst = jtag_trst; + /* allocate memory for a new list member */ + *last_cmd = cmd_queue_alloc(sizeof(jtag_command_t)); + (*last_cmd)->next = NULL; + last_comand_pointer = &((*last_cmd)->next); + (*last_cmd)->type = JTAG_RUNTEST; + + (*last_cmd)->cmd.runtest = cmd_queue_alloc(sizeof(runtest_command_t)); + (*last_cmd)->cmd.runtest->num_cycles = num_cycles; + (*last_cmd)->cmd.runtest->end_state = state; + + return ERROR_OK; +} + +void jtag_add_runtest(int num_cycles, enum tap_state state) +{ + jtag_prelude(state); - if (req_srst == -1) - req_srst = jtag_srst; + /* executed by sw or hw fifo */ + int retval=interface_jtag_add_runtest(num_cycles, cmd_queue_end_state); + if (retval!=ERROR_OK) + jtag_error=retval; +} +void jtag_add_reset(int req_tlr_or_trst, int req_srst) +{ + int trst_with_tlr = 0; + int retval; + /* Make sure that jtag_reset_config allows the requested reset */ /* if SRST pulls TRST, we can't fulfill srst == 1 with trst == 0 */ - if (((jtag_reset_config & RESET_SRST_PULLS_TRST) && (req_srst == 1)) && (req_trst == 0)) - return ERROR_JTAG_RESET_WOULD_ASSERT_TRST; + if (((jtag_reset_config & RESET_SRST_PULLS_TRST) && (req_srst == 1)) && (!req_tlr_or_trst)) + { + LOG_ERROR("BUG: requested reset would assert trst"); + jtag_error=ERROR_FAIL; + return; + } /* if TRST pulls SRST, we reset with TAP T-L-R */ - if (((jtag_reset_config & RESET_TRST_PULLS_SRST) && (req_trst == 1)) && (req_srst == 0)) + if (((jtag_reset_config & RESET_TRST_PULLS_SRST) && (req_tlr_or_trst)) && (req_srst == 0)) { - req_trst = 0; - trst_with_tms = 1; + trst_with_tlr = 1; } if (req_srst && !(jtag_reset_config & RESET_HAS_SRST)) { - ERROR("requested nSRST assertion, but the current configuration doesn't support this"); - return ERROR_JTAG_RESET_CANT_SRST; + LOG_ERROR("BUG: requested SRST assertion, but the current configuration doesn't support this"); + jtag_error=ERROR_FAIL; + return; } - if (req_trst && !(jtag_reset_config & RESET_HAS_TRST)) + if (req_tlr_or_trst) { - req_trst = 0; - trst_with_tms = 1; + if (!trst_with_tlr && (jtag_reset_config & RESET_HAS_TRST)) + { + jtag_trst = 1; + } else + { + trst_with_tlr = 1; + } + } else + { + jtag_trst = 0; } - /* allocate memory for a new list member */ - *last_cmd = cmd_queue_alloc(sizeof(jtag_command_t)); - (*last_cmd)->next = NULL; - last_comand_pointer = &((*last_cmd)->next); - (*last_cmd)->type = JTAG_RESET; - - (*last_cmd)->cmd.reset = cmd_queue_alloc(sizeof(reset_command_t)); - (*last_cmd)->cmd.reset->trst = req_trst; - (*last_cmd)->cmd.reset->srst = req_srst; - - jtag_trst = req_trst; jtag_srst = req_srst; + retval = interface_jtag_add_reset(jtag_trst, jtag_srst); + if (retval!=ERROR_OK) + { + jtag_error=retval; + return; + } + if (jtag_srst) { - jtag_call_event_callbacks(JTAG_SRST_ASSERTED); + LOG_DEBUG("SRST line asserted"); } else { - jtag_call_event_callbacks(JTAG_SRST_RELEASED); + LOG_DEBUG("SRST line released"); if (jtag_nsrst_delay) jtag_add_sleep(jtag_nsrst_delay * 1000); } - if (trst_with_tms) + if (trst_with_tlr) { - last_cmd = &((*last_cmd)->next); - - /* allocate memory for a new list member */ - *last_cmd = cmd_queue_alloc(sizeof(jtag_command_t)); - (*last_cmd)->next = NULL; - last_comand_pointer = &((*last_cmd)->next); - (*last_cmd)->type = JTAG_STATEMOVE; - - (*last_cmd)->cmd.statemove = cmd_queue_alloc(sizeof(statemove_command_t)); - (*last_cmd)->cmd.statemove->end_state = TAP_TLR; - + LOG_DEBUG("JTAG reset with tms instead of TRST"); + jtag_add_end_state(TAP_TLR); + jtag_add_tlr(); jtag_call_event_callbacks(JTAG_TRST_ASSERTED); + return; + } + + if (jtag_trst) + { + /* we just asserted nTRST, so we're now in Test-Logic-Reset, + * and inform possible listeners about this + */ + LOG_DEBUG("TRST line asserted"); cmd_queue_cur_state = TAP_TLR; - cmd_queue_end_state = TAP_TLR; - - return ERROR_OK; + jtag_call_event_callbacks(JTAG_TRST_ASSERTED); } else { - if (jtag_trst) - { - /* we just asserted nTRST, so we're now in Test-Logic-Reset, - * and inform possible listeners about this - */ - cmd_queue_cur_state = TAP_TLR; - jtag_call_event_callbacks(JTAG_TRST_ASSERTED); - } - else - { - /* the nTRST line got deasserted, so we're still in Test-Logic-Reset, - * but we might want to add a delay to give the TAP time to settle - */ - if (jtag_ntrst_delay) - jtag_add_sleep(jtag_ntrst_delay * 1000); - } + if (jtag_ntrst_delay) + jtag_add_sleep(jtag_ntrst_delay * 1000); } - - return ERROR_OK; } -int jtag_add_end_state(enum tap_state state) +int MINIDRIVER(interface_jtag_add_reset)(int req_trst, int req_srst) { jtag_command_t **last_cmd = jtag_get_last_command_p(); - + /* allocate memory for a new list member */ *last_cmd = cmd_queue_alloc(sizeof(jtag_command_t)); (*last_cmd)->next = NULL; last_comand_pointer = &((*last_cmd)->next); - (*last_cmd)->type = JTAG_END_STATE; + (*last_cmd)->type = JTAG_RESET; - (*last_cmd)->cmd.end_state = cmd_queue_alloc(sizeof(end_state_command_t)); - (*last_cmd)->cmd.end_state->end_state = state; + (*last_cmd)->cmd.reset = cmd_queue_alloc(sizeof(reset_command_t)); + (*last_cmd)->cmd.reset->trst = req_trst; + (*last_cmd)->cmd.reset->srst = req_srst; - if (state != -1) - cmd_queue_end_state = state; return ERROR_OK; } -int jtag_add_sleep(u32 us) +void jtag_add_end_state(enum tap_state state) +{ + cmd_queue_end_state = state; + if ((cmd_queue_end_state == TAP_SD)||(cmd_queue_end_state == TAP_SD)) + { + LOG_ERROR("BUG: TAP_SD/SI can't be end state. Calling code should use a larger scan field"); + } +} + +int MINIDRIVER(interface_jtag_add_sleep)(u32 us) { jtag_command_t **last_cmd = jtag_get_last_command_p(); @@ -937,13 +1022,21 @@ int jtag_add_sleep(u32 us) return ERROR_OK; } +void jtag_add_sleep(u32 us) +{ + int retval=interface_jtag_add_sleep(us); + if (retval!=ERROR_OK) + jtag_error=retval; + return; +} + int jtag_scan_size(scan_command_t *cmd) { int bit_count = 0; int i; /* count bits in scan command */ - for (i=0; inum_fields; i++) + for (i = 0; i < cmd->num_fields; i++) { bit_count += cmd->fields[i].num_bits; } @@ -970,7 +1063,7 @@ int jtag_build_buffer(scan_command_t *cmd, u8 **buffer) #endif buf_set_buf(cmd->fields[i].out_value, 0, *buffer, bit_count, cmd->fields[i].num_bits); #ifdef _DEBUG_JTAG_IO_ - DEBUG("fields[%i].out_value: 0x%s", i, char_buf); + LOG_DEBUG("fields[%i].out_value: 0x%s", i, char_buf); free(char_buf); #endif } @@ -986,25 +1079,28 @@ int jtag_read_buffer(u8 *buffer, scan_command_t *cmd) { int i; int bit_count = 0; - int retval = ERROR_OK; - - for (i=0; i < cmd->num_fields; i++) + int retval; + + /* we return ERROR_OK, unless a check fails, or a handler reports a problem */ + retval = ERROR_OK; + + for (i = 0; i < cmd->num_fields; i++) { - /* if neither in_value, in_check_value nor in_handler + /* if neither in_value nor in_handler * are specified we don't have to examine this field */ - if (cmd->fields[i].in_value || cmd->fields[i].in_check_value || cmd->fields[i].in_handler) + if (cmd->fields[i].in_value || cmd->fields[i].in_handler) { int num_bits = cmd->fields[i].num_bits; u8 *captured = buf_set_buf(buffer, bit_count, malloc(CEIL(num_bits, 8)), 0, num_bits); - #ifdef _DEBUG_JTAG_IO_ - char *char_buf; - - char_buf = buf_to_str(captured, (num_bits > 64) ? 64 : num_bits, 16); - DEBUG("fields[%i].in_value: 0x%s", i, char_buf); - free(char_buf); - #endif + +#ifdef _DEBUG_JTAG_IO_ + char *char_buf; + char_buf = buf_to_str(captured, (num_bits > 64) ? 64 : num_bits, 16); + LOG_DEBUG("fields[%i].in_value: 0x%s", i, char_buf); + free(char_buf); +#endif if (cmd->fields[i].in_value) { @@ -1012,10 +1108,9 @@ int jtag_read_buffer(u8 *buffer, scan_command_t *cmd) if (cmd->fields[i].in_handler) { - if (cmd->fields[i].in_handler(cmd->fields[i].in_value, cmd->fields[i].in_handler_priv) != ERROR_OK) + if (cmd->fields[i].in_handler(cmd->fields[i].in_value, cmd->fields[i].in_handler_priv, cmd->fields+i) != ERROR_OK) { - /* TODO: error reporting */ - WARNING("in_handler reported a failed check"); + LOG_WARNING("in_handler reported a failed check"); retval = ERROR_JTAG_QUEUE_FAILED; } } @@ -1024,31 +1119,16 @@ int jtag_read_buffer(u8 *buffer, scan_command_t *cmd) /* no in_value specified, but a handler takes care of the scanned data */ if (cmd->fields[i].in_handler && (!cmd->fields[i].in_value)) { - if (cmd->fields[i].in_handler(captured, cmd->fields[i].in_handler_priv) != ERROR_OK) + if (cmd->fields[i].in_handler(captured, cmd->fields[i].in_handler_priv, cmd->fields+i) != ERROR_OK) { - /* TODO: error reporting */ - WARNING("in_handler reported a failed check"); + /* We're going to call the error:handler later, but if the in_handler + * reported an error we report this failure upstream + */ + LOG_WARNING("in_handler reported a failed check"); retval = ERROR_JTAG_QUEUE_FAILED; } - } - if (cmd->fields[i].in_check_value) - { - if ((cmd->fields[i].in_check_mask && buf_cmp_mask(captured, cmd->fields[i].in_check_value, cmd->fields[i].in_check_mask, num_bits)) - || (!cmd->fields[i].in_check_mask && buf_cmp(captured, cmd->fields[i].in_check_mask, num_bits))) - { - char *captured_char = buf_to_str(captured, (num_bits > 64) ? 64 : num_bits, 16); - char *in_check_value_char = buf_to_str(cmd->fields[i].in_check_value, (num_bits > 64) ? 64 : num_bits, 16); - char *in_check_mask_char = buf_to_str(cmd->fields[i].in_check_mask, (num_bits > 64) ? 64 : num_bits, 16); - /* TODO: error reporting */ - WARNING("value captured during scan didn't pass the requested check: captured: 0x%s check_value: 0x%s check_mask: 0x%s", captured_char, in_check_value_char, in_check_mask_char); - retval = ERROR_JTAG_QUEUE_FAILED; - free(captured_char); - free(in_check_value_char); - free(in_check_mask_char); - } - } free(captured); } bit_count += cmd->fields[i].num_bits; @@ -1057,14 +1137,74 @@ int jtag_read_buffer(u8 *buffer, scan_command_t *cmd) return retval; } +int jtag_check_value(u8 *captured, void *priv, scan_field_t *field) +{ + int retval = ERROR_OK; + int num_bits = field->num_bits; + + int compare_failed = 0; + + if (field->in_check_mask) + compare_failed = buf_cmp_mask(captured, field->in_check_value, field->in_check_mask, num_bits); + else + compare_failed = buf_cmp(captured, field->in_check_value, num_bits); + + if (compare_failed) + { + /* An error handler could have caught the failing check + * only report a problem when there wasn't a handler, or if the handler + * acknowledged the error + */ + if (compare_failed) + { + char *captured_char = buf_to_str(captured, (num_bits > 64) ? 64 : num_bits, 16); + char *in_check_value_char = buf_to_str(field->in_check_value, (num_bits > 64) ? 64 : num_bits, 16); + + if (field->in_check_mask) + { + char *in_check_mask_char; + in_check_mask_char = buf_to_str(field->in_check_mask, (num_bits > 64) ? 64 : num_bits, 16); + LOG_WARNING("value captured during scan didn't pass the requested check: captured: 0x%s check_value: 0x%s check_mask: 0x%s", captured_char, in_check_value_char, in_check_mask_char); + free(in_check_mask_char); + } + else + { + LOG_WARNING("value captured during scan didn't pass the requested check: captured: 0x%s check_value: 0x%s", captured_char, in_check_value_char); + } + + free(captured_char); + free(in_check_value_char); + + retval = ERROR_JTAG_QUEUE_FAILED; + } + + } + return retval; +} + +/* + set up checking of this field using the in_handler. The values passed in must be valid until + after jtag_execute() has completed. + */ +void jtag_set_check_value(scan_field_t *field, u8 *value, u8 *mask, error_handler_t *in_error_handler) +{ + if (value) + field->in_handler = jtag_check_value; + else + field->in_handler = NULL; /* No check, e.g. embeddedice uses value==NULL to indicate no check */ + field->in_handler_priv = NULL; /* this will be filled in at the invocation site to point to the field duplicate */ + field->in_check_value = value; + field->in_check_mask = mask; +} + enum scan_type jtag_scan_type(scan_command_t *cmd) { int i; int type = 0; - for (i=0; i < cmd->num_fields; i++) + for (i = 0; i < cmd->num_fields; i++) { - if (cmd->fields[i].in_check_value || cmd->fields[i].in_value || cmd->fields[i].in_handler) + if (cmd->fields[i].in_value || cmd->fields[i].in_handler) type |= SCAN_IN; if (cmd->fields[i].out_value) type |= SCAN_OUT; @@ -1073,7 +1213,7 @@ enum scan_type jtag_scan_type(scan_command_t *cmd) return type; } -int jtag_execute_queue(void) +int MINIDRIVER(interface_jtag_execute_queue)(void) { int retval; @@ -1087,20 +1227,22 @@ int jtag_execute_queue(void) return retval; } -int jtag_cancel_queue(void) +int jtag_execute_queue(void) { - cmd_queue_free(); - jtag_command_queue = NULL; - last_comand_pointer = &jtag_command_queue; - - return ERROR_OK; + int retval=interface_jtag_execute_queue(); + if (retval==ERROR_OK) + { + retval=jtag_error; + } + jtag_error=ERROR_OK; + return retval; } int jtag_reset_callback(enum jtag_event event, void *priv) { jtag_device_t *device = priv; - DEBUG(""); + LOG_DEBUG("-"); if (event == JTAG_TRST_ASSERTED) { @@ -1116,6 +1258,102 @@ void jtag_sleep(u32 us) usleep(us); } +/* Try to examine chain layout according to IEEE 1149.1 §12 + */ +int jtag_examine_chain() +{ + jtag_device_t *device = jtag_devices; + scan_field_t field; + u8 idcode_buffer[JTAG_MAX_CHAIN_SIZE * 4]; + int i; + int bit_count; + int device_count = 0; + u8 zero_check = 0x0; + u8 one_check = 0xff; + + field.device = 0; + field.num_bits = sizeof(idcode_buffer) * 8; + field.out_value = idcode_buffer; + field.out_mask = NULL; + field.in_value = idcode_buffer; + field.in_check_value = NULL; + field.in_check_mask = NULL; + field.in_handler = NULL; + field.in_handler_priv = NULL; + + for (i = 0; i < JTAG_MAX_CHAIN_SIZE; i++) + { + buf_set_u32(idcode_buffer, i * 32, 32, 0x000000FF); + } + + jtag_add_plain_dr_scan(1, &field, TAP_TLR); + jtag_execute_queue(); + + for (i = 0; i < JTAG_MAX_CHAIN_SIZE * 4; i++) + { + zero_check |= idcode_buffer[i]; + one_check &= idcode_buffer[i]; + } + + /* if there wasn't a single non-zero bit or if all bits were one, the scan isn't valid */ + if ((zero_check == 0x00) || (one_check == 0xff)) + { + LOG_ERROR("JTAG communication failure, check connection, JTAG interface, target power etc."); + return ERROR_JTAG_INIT_FAILED; + } + + for (bit_count = 0; bit_count < (JTAG_MAX_CHAIN_SIZE * 32) - 31;) + { + u32 idcode = buf_get_u32(idcode_buffer, bit_count, 32); + if ((idcode & 1) == 0) + { + /* LSB must not be 0, this indicates a device in bypass */ + device_count++; + + bit_count += 1; + } + else + { + u32 manufacturer; + u32 part; + u32 version; + + if (idcode == 0x000000FF) + { + /* End of chain (invalid manufacturer ID) */ + break; + } + + if (device) + { + device->idcode = idcode; + device = device->next; + } + device_count++; + + manufacturer = (idcode & 0xffe) >> 1; + part = (idcode & 0xffff000) >> 12; + version = (idcode & 0xf0000000) >> 28; + + LOG_INFO("JTAG device found: 0x%8.8x (Manufacturer: 0x%3.3x, Part: 0x%4.4x, Version: 0x%1.1x)", + idcode, manufacturer, part, version); + + bit_count += 32; + } + } + + /* see if number of discovered devices matches configuration */ + if (device_count != jtag_num_devices) + { + LOG_ERROR("number of discovered devices in JTAG chain (%i) doesn't match configuration (%i)", + device_count, jtag_num_devices); + LOG_ERROR("check the config file and ensure proper JTAG communication (connections, speed, ...)"); + return ERROR_JTAG_INIT_FAILED; + } + + return ERROR_OK; +} + int jtag_validate_chain() { jtag_device_t *device = jtag_devices; @@ -1153,9 +1391,10 @@ int jtag_validate_chain() if (buf_get_u32(ir_test, chain_pos, 2) != 0x1) { char *cbuf = buf_to_str(ir_test, total_ir_length, 16); - ERROR("Error validating JTAG scan chain, IR mismatch, scan returned 0x%s", cbuf); + LOG_ERROR("Error validating JTAG scan chain, IR mismatch, scan returned 0x%s", cbuf); free(cbuf); - exit(-1); + free(ir_test); + return ERROR_JTAG_INIT_FAILED; } chain_pos += device->ir_length; device = device->next; @@ -1164,9 +1403,10 @@ int jtag_validate_chain() if (buf_get_u32(ir_test, chain_pos, 2) != 0x3) { char *cbuf = buf_to_str(ir_test, total_ir_length, 16); - ERROR("Error validating JTAG scan chain, IR mismatch, scan returned 0x%s", cbuf); + LOG_ERROR("Error validating JTAG scan chain, IR mismatch, scan returned 0x%s", cbuf); free(cbuf); - exit(-1); + free(ir_test); + return ERROR_JTAG_INIT_FAILED; } free(ir_test); @@ -1179,15 +1419,17 @@ int jtag_register_commands(struct command_context_s *cmd_ctx) register_command(cmd_ctx, NULL, "interface", handle_interface_command, COMMAND_CONFIG, NULL); register_command(cmd_ctx, NULL, "jtag_speed", handle_jtag_speed_command, - COMMAND_ANY, "set jtag speed (if supported) "); + COMMAND_ANY, "set jtag speed (if supported) []"); + register_command(cmd_ctx, NULL, "jtag_khz", handle_jtag_khz_command, + COMMAND_ANY, "same as jtag_speed, except it takes maximum khz as arguments. 0 KHz = RTCK."); register_command(cmd_ctx, NULL, "jtag_device", handle_jtag_device_command, - COMMAND_CONFIG, NULL); + COMMAND_CONFIG, "jtag_device "); register_command(cmd_ctx, NULL, "reset_config", handle_reset_config_command, COMMAND_CONFIG, NULL); register_command(cmd_ctx, NULL, "jtag_nsrst_delay", handle_jtag_nsrst_delay_command, - COMMAND_CONFIG, NULL); + COMMAND_ANY, "jtag_nsrst_delay - delay after deasserting srst in ms"); register_command(cmd_ctx, NULL, "jtag_ntrst_delay", handle_jtag_ntrst_delay_command, - COMMAND_CONFIG, NULL); + COMMAND_ANY, "jtag_ntrst_delay - delay after deasserting trst in ms"); register_command(cmd_ctx, NULL, "scan_chain", handle_scan_chain_command, COMMAND_EXEC, "print current scan chain configuration"); @@ -1198,8 +1440,6 @@ int jtag_register_commands(struct command_context_s *cmd_ctx) COMMAND_EXEC, "toggle reset lines "); register_command(cmd_ctx, NULL, "runtest", handle_runtest_command, COMMAND_EXEC, "move to Run-Test/Idle, and execute "); - register_command(cmd_ctx, NULL, "statemove", handle_statemove_command, - COMMAND_EXEC, "move to current endstate or [tap_state]"); register_command(cmd_ctx, NULL, "irscan", handle_irscan_command, COMMAND_EXEC, "execute IR scan [dev2] [instr2] ..."); register_command(cmd_ctx, NULL, "drscan", handle_drscan_command, @@ -1210,89 +1450,129 @@ int jtag_register_commands(struct command_context_s *cmd_ctx) return ERROR_OK; } -int jtag_init(struct command_context_s *cmd_ctx) +int jtag_interface_init(struct command_context_s *cmd_ctx) { - int i; + if (!jtag_interface) + { + /* nothing was previously specified by "interface" command */ + LOG_ERROR("JTAG interface has to be specified, see \"interface\" command"); + return ERROR_JTAG_INVALID_INTERFACE; + } + if(hasKHz) + { + /*stay on "reset speed"*/ + if (jtag_interface->khz(speed1, &speed1) == ERROR_OK) + jtag_speed = speed1; + if (jtag_interface->khz(speed2, &speed2) == ERROR_OK) + jtag_speed_post_reset = speed2; + hasKHz = 0; + } + + if (jtag_interface->init() != ERROR_OK) + return ERROR_JTAG_INIT_FAILED; + + - DEBUG(""); + jtag = jtag_interface; + return ERROR_OK; +} + +int jtag_init(struct command_context_s *cmd_ctx) +{ + int validate_tries = 0; + jtag_device_t *device; - if (jtag_speed == -1) - jtag_speed = 0; + LOG_DEBUG("-"); - if (jtag_interface && (jtag_interface[0] != 0)) - /* configuration var 'jtag_interface' is set, and not empty */ - for (i = 0; jtag_interfaces[i]; i++) - { - if (strcmp(jtag_interface, jtag_interfaces[i]->name) == 0) - { - jtag_device_t *device; - device = jtag_devices; + if (!jtag && jtag_interface_init(cmd_ctx) != ERROR_OK) + return ERROR_JTAG_INIT_FAILED; + + device = jtag_devices; + jtag_ir_scan_size = 0; + jtag_num_devices = 0; + while (device != NULL) + { + jtag_ir_scan_size += device->ir_length; + jtag_num_devices++; + device = device->next; + } - if (jtag_interfaces[i]->init() != ERROR_OK) - return ERROR_JTAG_INIT_FAILED; - jtag = jtag_interfaces[i]; + jtag_add_tlr(); + jtag_execute_queue(); - jtag_ir_scan_size = 0; - jtag_num_devices = 0; - while (device != NULL) - { - jtag_ir_scan_size += device->ir_length; - jtag_num_devices++; - device = device->next; - } - - jtag_add_statemove(TAP_TLR); - jtag_execute_queue(); - - jtag_validate_chain(); - - return ERROR_OK; - } - } + /* examine chain first, as this could discover the real chain layout */ + if (jtag_examine_chain() != ERROR_OK) + { + LOG_ERROR("trying to validate configured JTAG chain anyway..."); + } - /* no valid interface was found (i.e. the configuration option, - * didn't match one of the compiled-in interfaces - */ - ERROR("No valid jtag interface found (%s)", jtag_interface); - ERROR("compiled-in jtag interfaces:"); - for (i = 0; jtag_interfaces[i]; i++) + while (jtag_validate_chain() != ERROR_OK) { - ERROR("%i: %s", i, jtag_interfaces[i]->name); + validate_tries++; + + if (validate_tries > 5) + { + LOG_ERROR("Could not validate JTAG chain, exit"); + return ERROR_JTAG_INVALID_INTERFACE; + } + usleep(10000); } - jtag = NULL; - return ERROR_JTAG_INVALID_INTERFACE; + return ERROR_OK; +} + + +static int default_khz(int khz, int *jtag_speed) +{ + LOG_ERROR("Translation from khz to jtag_speed not implemented"); + return ERROR_FAIL; } int handle_interface_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc) { int i; - - /* only if the configuration var isn't overwritten from cmdline */ - if (!jtag_interface) + + /* check whether the interface is already configured */ + if (jtag_interface) { - if (args[0] && (args[0][0] != 0)) + LOG_WARNING("Interface already configured, ignoring"); + return ERROR_OK; + } + + /* interface name is a mandatory argument */ + if (argc < 1 || args[0][0] == '\0') + { + return ERROR_COMMAND_SYNTAX_ERROR; + } + + for (i=0; jtag_interfaces[i]; i++) + { + if (strcmp(args[0], jtag_interfaces[i]->name) == 0) { - for (i=0; jtag_interfaces[i]; i++) + if (jtag_interfaces[i]->register_commands(cmd_ctx) != ERROR_OK) + exit(-1); + + jtag_interface = jtag_interfaces[i]; + + if (jtag_interface->khz == NULL) { - if (strcmp(args[0], jtag_interfaces[i]->name) == 0) - { - if (jtag_interfaces[i]->register_commands(cmd_ctx) != ERROR_OK) - exit(-1); - - jtag_interface = jtag_interfaces[i]->name; - - return ERROR_OK; - } + jtag_interface->khz = default_khz; } + return ERROR_OK; } - - /* remember the requested interface name, so we can complain about it later */ - jtag_interface = strdup(args[0]); - DEBUG("'interface' command didn't specify a valid interface"); } - - return ERROR_OK; + + /* no valid interface was found (i.e. the configuration option, + * didn't match one of the compiled-in interfaces + */ + LOG_ERROR("No valid jtag interface found (%s)", args[0]); + LOG_ERROR("compiled-in jtag interfaces:"); + for (i = 0; jtag_interfaces[i]; i++) + { + LOG_ERROR("%i: %s", i, jtag_interfaces[i]->name); + } + + return ERROR_JTAG_INVALID_INTERFACE; } int handle_jtag_device_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc) @@ -1326,7 +1606,7 @@ int handle_jtag_device_command(struct command_context_s *cmd_ctx, char *cmd, cha jtag_register_event_callback(jtag_reset_callback, (*last_device_p)); jtag_num_devices++; - + return ERROR_OK; } @@ -1351,6 +1631,9 @@ int handle_scan_chain_command(struct command_context_s *cmd_ctx, char *cmd, char int handle_reset_config_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc) { + if (argc < 1) + return ERROR_COMMAND_SYNTAX_ERROR; + if (argc >= 1) { if (strcmp(args[0], "none") == 0) @@ -1363,25 +1646,31 @@ int handle_reset_config_command(struct command_context_s *cmd_ctx, char *cmd, ch jtag_reset_config = RESET_TRST_AND_SRST; else { - ERROR("invalid reset_config argument"); - exit(-1); + LOG_ERROR("invalid reset_config argument, defaulting to none"); + jtag_reset_config = RESET_NONE; + return ERROR_INVALID_ARGUMENTS; } } if (argc >= 2) { - if (strcmp(args[1], "srst_pulls_trst") == 0) - jtag_reset_config |= RESET_SRST_PULLS_TRST; - else if (strcmp(args[1], "trst_pulls_srst") == 0) - jtag_reset_config |= RESET_TRST_PULLS_SRST; - else if (strcmp(args[1], "combined") == 0) - jtag_reset_config |= RESET_SRST_PULLS_TRST | RESET_TRST_PULLS_SRST; - else if (strcmp(args[1], "separate") == 0) - jtag_reset_config &= ~(RESET_SRST_PULLS_TRST | RESET_TRST_PULLS_SRST); - else + if (strcmp(args[1], "separate") == 0) { - ERROR("invalid reset_config argument"); - exit(-1); + /* seperate reset lines - default */ + } else + { + if (strcmp(args[1], "srst_pulls_trst") == 0) + jtag_reset_config |= RESET_SRST_PULLS_TRST; + else if (strcmp(args[1], "trst_pulls_srst") == 0) + jtag_reset_config |= RESET_TRST_PULLS_SRST; + else if (strcmp(args[1], "combined") == 0) + jtag_reset_config |= RESET_SRST_PULLS_TRST | RESET_TRST_PULLS_SRST; + else + { + LOG_ERROR("invalid reset_config argument, defaulting to none"); + jtag_reset_config = RESET_NONE; + return ERROR_INVALID_ARGUMENTS; + } } } @@ -1393,8 +1682,9 @@ int handle_reset_config_command(struct command_context_s *cmd_ctx, char *cmd, ch jtag_reset_config &= ~RESET_TRST_OPEN_DRAIN; else { - ERROR("invalid reset_config argument"); - exit(-1); + LOG_ERROR("invalid reset_config argument, defaulting to none"); + jtag_reset_config = RESET_NONE; + return ERROR_INVALID_ARGUMENTS; } } @@ -1406,8 +1696,9 @@ int handle_reset_config_command(struct command_context_s *cmd_ctx, char *cmd, ch jtag_reset_config &= ~RESET_SRST_PUSH_PULL; else { - ERROR("invalid reset_config argument"); - exit(-1); + LOG_ERROR("invalid reset_config argument, defaulting to none"); + jtag_reset_config = RESET_NONE; + return ERROR_INVALID_ARGUMENTS; } } @@ -1418,7 +1709,7 @@ int handle_jtag_nsrst_delay_command(struct command_context_s *cmd_ctx, char *cmd { if (argc < 1) { - ERROR("jtag_nsrst_delay command takes one required argument"); + LOG_ERROR("jtag_nsrst_delay command takes one required argument"); exit(-1); } else @@ -1433,7 +1724,7 @@ int handle_jtag_ntrst_delay_command(struct command_context_s *cmd_ctx, char *cmd { if (argc < 1) { - ERROR("jtag_ntrst_delay command takes one required argument"); + LOG_ERROR("jtag_ntrst_delay command takes one required argument"); exit(-1); } else @@ -1446,40 +1737,87 @@ int handle_jtag_ntrst_delay_command(struct command_context_s *cmd_ctx, char *cmd int handle_jtag_speed_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc) { - if (argc == 0) - command_print(cmd_ctx, "jtag_speed: %i", jtag_speed); - - if (argc > 0) + int cur_speed = 0; + + if (argc != 0) { + if ((argc<1) || (argc>2)) + return ERROR_COMMAND_SYNTAX_ERROR; + + LOG_DEBUG("handle jtag speed"); + + if (argc >= 1) + cur_speed = jtag_speed = jtag_speed_post_reset = strtoul(args[0], NULL, 0); + if (argc == 2) + cur_speed = jtag_speed_post_reset = strtoul(args[1], NULL, 0); + /* this command can be called during CONFIG, * in which case jtag isn't initialized */ if (jtag) - jtag->speed(strtoul(args[0], NULL, 0)); - else - jtag_speed = strtoul(args[0], NULL, 0); - } + jtag->speed(cur_speed); + } + command_print(cmd_ctx, "jtag_speed: %d, %d", jtag_speed, jtag_speed_post_reset); + + return ERROR_OK; +} +int handle_jtag_khz_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc) +{ + LOG_DEBUG("handle jtag khz"); + + if ((argc<1) || (argc>2)) + return ERROR_COMMAND_SYNTAX_ERROR; + + if (argc >= 1) + speed1 = speed2 = strtoul(args[0], NULL, 0); + if (argc == 2) + speed2 = strtoul(args[1], NULL, 0); + + if (jtag != NULL) + { + int cur_speed = 0; + LOG_DEBUG("have interface set up"); + int speed_div1, speed_div2; + if (jtag->khz(speed1, &speed_div1)!=ERROR_OK) + return ERROR_OK; + if (jtag->khz(speed2, &speed_div2)!=ERROR_OK) + return ERROR_OK; + + if (argc >= 1) + cur_speed = jtag_speed = jtag_speed_post_reset = speed_div1; + if (argc == 2) + cur_speed = jtag_speed_post_reset = speed_div2; + + jtag->speed(cur_speed); + } else + { + hasKHz = 1; + } + return ERROR_OK; } + int handle_endstate_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc) { enum tap_state state; if (argc < 1) { - command_print(cmd_ctx, "usage: endstate "); - return ERROR_OK; + return ERROR_COMMAND_SYNTAX_ERROR; } - - for (state = 0; state < 16; state++) + else { - if (strcmp(args[0], tap_state_strings[state]) == 0) + for (state = 0; state < 16; state++) { - jtag_add_end_state(state); - jtag_execute_queue(); + if (strcmp(args[0], tap_state_strings[state]) == 0) + { + jtag_add_end_state(state); + jtag_execute_queue(); + } } } + command_print(cmd_ctx, "current endstate: %s", tap_state_strings[cmd_queue_end_state]); return ERROR_OK; } @@ -1488,13 +1826,10 @@ int handle_jtag_reset_command(struct command_context_s *cmd_ctx, char *cmd, char { int trst = -1; int srst = -1; - char *usage = "usage: jtag_reset "; - int retval; - if (argc < 1) + if (argc < 2) { - command_print(cmd_ctx, usage); - return ERROR_OK; + return ERROR_COMMAND_SYNTAX_ERROR; } if (args[0][0] == '1') @@ -1503,8 +1838,7 @@ int handle_jtag_reset_command(struct command_context_s *cmd_ctx, char *cmd, char trst = 0; else { - command_print(cmd_ctx, usage); - return ERROR_OK; + return ERROR_COMMAND_SYNTAX_ERROR; } if (args[1][0] == '1') @@ -1513,24 +1847,13 @@ int handle_jtag_reset_command(struct command_context_s *cmd_ctx, char *cmd, char srst = 0; else { - command_print(cmd_ctx, usage); - return ERROR_OK; + return ERROR_COMMAND_SYNTAX_ERROR; } - if ((retval = jtag_add_reset(trst, srst)) != ERROR_OK) - { - switch (retval) - { - case ERROR_JTAG_RESET_WOULD_ASSERT_TRST: - command_print(cmd_ctx, "requested reset would assert trst\nif this is acceptable, use jtag_reset 1 %c", args[1][0]); - break; - case ERROR_JTAG_RESET_CANT_SRST: - command_print(cmd_ctx, "can't assert srst because the current reset_config doesn't support it"); - break; - default: - command_print(cmd_ctx, "unknown error"); - } - } + if (!jtag && jtag_interface_init(cmd_ctx) != ERROR_OK) + return ERROR_JTAG_INIT_FAILED; + + jtag_add_reset(trst, srst); jtag_execute_queue(); return ERROR_OK; @@ -1540,8 +1863,7 @@ int handle_runtest_command(struct command_context_s *cmd_ctx, char *cmd, char ** { if (argc < 1) { - command_print(cmd_ctx, "usage: runtest "); - return ERROR_OK; + return ERROR_COMMAND_SYNTAX_ERROR; } jtag_add_runtest(strtol(args[0], NULL, 0), -1); @@ -1551,28 +1873,6 @@ int handle_runtest_command(struct command_context_s *cmd_ctx, char *cmd, char ** } -int handle_statemove_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc) -{ - enum tap_state state; - - state = -1; - if (argc == 1) - { - for (state = 0; state < 16; state++) - { - if (strcmp(args[0], tap_state_strings[state]) == 0) - { - break; - } - } - } - - jtag_add_statemove(state); - jtag_execute_queue(); - - return ERROR_OK; - -} int handle_irscan_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc) { @@ -1581,8 +1881,7 @@ int handle_irscan_command(struct command_context_s *cmd_ctx, char *cmd, char **a if ((argc < 2) || (argc % 2)) { - command_print(cmd_ctx, "usage: irscan [dev2] [instr2] ..."); - return ERROR_OK; + return ERROR_COMMAND_SYNTAX_ERROR; } fields = malloc(sizeof(scan_field_t) * argc / 2); @@ -1622,8 +1921,7 @@ int handle_drscan_command(struct command_context_s *cmd_ctx, char *cmd, char **a if ((argc < 2) || (argc % 2)) { - command_print(cmd_ctx, "usage: drscan [dev2] [var2]"); - return ERROR_OK; + return ERROR_COMMAND_SYNTAX_ERROR; } for (i = 0; i < argc; i+=2) @@ -1674,20 +1972,25 @@ int handle_drscan_command(struct command_context_s *cmd_ctx, char *cmd, char **a int handle_verify_ircapture_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc) { - if (argc == 0) - { - command_print(cmd_ctx, "verify Capture-IR is %s", (jtag_verify_capture_ir) ? "enabled": "disabled"); - return ERROR_OK; - } - - if (strcmp(args[0], "enable") == 0) + if (argc == 1) { - jtag_verify_capture_ir = 1; - } - else if (strcmp(args[0], "disable") == 0) + if (strcmp(args[0], "enable") == 0) + { + jtag_verify_capture_ir = 1; + } + else if (strcmp(args[0], "disable") == 0) + { + jtag_verify_capture_ir = 0; + } else + { + return ERROR_COMMAND_SYNTAX_ERROR; + } + } else if (argc != 0) { - jtag_verify_capture_ir = 0; + return ERROR_COMMAND_SYNTAX_ERROR; } + command_print(cmd_ctx, "verify Capture-IR is %s", (jtag_verify_capture_ir) ? "enabled": "disabled"); + return ERROR_OK; }